Hydraulically operated clutch assembly for a motor vehicle having a hydraulic system with a multiplicity of cylinders

US5638934A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Achim Link · Schweinfurt, DE
• Reinhold Weidinger · Unterspiesheim, DE

Key dates

• Filing date: Apr 25, 1995
• Grant date: Jun 17, 1997
• Expiry date: Apr 25, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D25/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A system for engaging or disengaging a friction clutch has at least one drive, which drive is connected to an energy accumulator and is intended to move against the force of a spring mechanism of a friction clutch. The system can have at least one adjusting mechanism for the drive to compensate for the axial shift resulting from the change in position of the spring mechanism due to wear on the friction clutch. This adjusting mechanism can include an actuating mechanism connected to the transfer element. The actuating mechanism can be moved in the direction of motion of the drive, and can include a retaining mechanism which restricts the extension of the actuating mechanism by means of a stop. The retaining mechanism, by means of a retaining force, secures the orientation of the stroke of the actuating mechanism against an axial displacement until an axial shift occurs due to wear of the friction clutch. When there is wear to the friction clutch, a reduction in the force of the spring mechanism can result, which force acts against the actuation force applied by the energy accumulator, since the force of the spring mechanism is reduced, a resulting axial force arises which exceeds th…